Stockholders' Equity (Tables)
|
12 Months Ended |
Dec. 31, 2013
|
Dec. 31, 2012
|
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|
|
|
|
|
Weighted |
|
|
Weighted |
|
|
|
Options |
|
|
Average |
|
|
Average |
|
|
|
Outstanding |
|
|
Exercise |
|
|
Grant Date Fair |
|
|
|
|
|
|
Price |
|
|
Value |
|
|
|
|
|
|
|
|
|
|
|
Beginning of the year |
|
1,639,842
|
|
$ |
11.46
|
|
$ |
10.85
|
|
Granted |
|
-
|
|
|
-
|
|
|
-
|
|
Exercised |
|
-
|
|
|
-
|
|
|
-
|
|
Forfeited |
|
(7,250
|
) |
$ |
6.04
|
|
$ |
5.51
|
|
Expired |
|
(68,335
|
) |
$ |
18.94
|
|
$ |
16.90
|
|
End of year |
|
1,564,257
|
|
$ |
11.16
|
|
$ |
10.61
|
|
|
|
|
|
|
|
|
|
|
|
Options exercisable |
|
1,530,200
|
|
$ |
11.28
|
|
$ |
10.73
|
|
|
|
|
|
|
|
Weighted |
|
|
Weighted |
|
|
|
Options |
|
|
Average |
|
|
Average |
|
|
|
Outstanding |
|
|
Exercise |
|
|
Grant Date Fair |
|
|
|
|
|
|
Price |
|
|
Value |
|
|
|
|
|
|
|
|
|
|
|
Beginning of the year |
|
1,674,065
|
|
$ |
11.37
|
|
$ |
10.74
|
|
Granted |
|
-
|
|
|
-
|
|
|
-
|
|
Exercised |
|
-
|
|
|
-
|
|
|
-
|
|
Forfeited |
|
(167
|
) |
$ |
6.30
|
|
$ |
5.67
|
|
Expired |
|
(34,056
|
) |
$ |
9.42
|
|
$ |
7.48
|
|
End of year |
|
1,639,842
|
|
$ |
11.46
|
|
$ |
10.85
|
|
|
|
|
|
|
|
|
|
|
|
Options exercisable |
|
1,523,536
|
|
$ |
11.82
|
|
$ |
11.22
|
|
|
Schedule of Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] |
|
|
Stock Options Outstanding |
|
|
Stock Options Vested |
|
|
|
Weighted |
|
|
|
|
|
|
|
|
Weighted |
|
|
|
|
|
|
|
|
|
Average |
|
|
|
|
|
|
|
|
Average |
|
|
|
|
|
|
|
|
|
Remaining |
|
|
|
|
|
Weighted |
|
|
Remaining |
|
|
|
|
|
Weighted |
|
|
|
Contractual |
|
|
Number |
|
|
Average |
|
|
Contractual |
|
|
Number |
|
|
Average |
|
|
|
Life |
|
|
of |
|
|
Exercise |
|
|
Life |
|
|
of |
|
|
Exercise |
|
|
|
-Years |
|
|
Awards |
|
|
Price |
|
|
-Years |
|
|
Awards |
|
|
Price |
|
Exercise Prices |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$4.50
- $8.70
|
|
5.28
|
|
|
835,884
|
|
$ |
6.33
|
|
|
5.21
|
|
|
801,827
|
|
$ |
6.36
|
|
$9.00
- $12.90
|
|
3.95
|
|
|
130,037
|
|
$ |
10.46
|
|
|
3.95
|
|
|
130,037
|
|
$ |
10.46
|
|
$13.50
-
|
|
2.30
|
|
|
358,336
|
|
$ |
14.17
|
|
|
2.30
|
|
|
358,336
|
|
$ |
14.17
|
|
$19.20
-
|
|
2.12
|
|
|
240,000
|
|
$ |
23.85
|
|
|
2.12
|
|
|
240,000
|
|
$ |
23.85
|
|
Total |
|
4.00
|
|
|
1,564,257
|
|
$ |
11.16
|
|
|
3.94
|
|
|
1,530,200
|
|
$ |
11.28
|
|
|
|
|
Stock Options Outstanding |
|
|
Stock Options Vested |
|
|
|
Weighted |
|
|
|
|
|
|
|
|
Weighted |
|
|
|
|
|
|
|
|
|
Average |
|
|
|
|
|
|
|
|
Average |
|
|
|
|
|
|
|
|
|
Remaining |
|
|
|
|
|
Weighted |
|
|
Remaining |
|
|
|
|
|
Weighted |
|
|
|
Contractual |
|
|
Number |
|
|
Average |
|
|
Contractual |
|
|
Number |
|
|
Average |
|
|
|
Life |
|
|
of |
|
|
Exercise |
|
|
Life |
|
|
of |
|
|
Exercise |
|
|
|
-Years |
|
|
Awards |
|
|
Price |
|
|
-Years |
|
|
Awards |
|
|
Price |
|
Exercise Prices |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$4.50
- $8.70
|
|
6.27
|
|
|
844,801
|
|
$ |
6.33
|
|
|
6.04
|
|
|
728,495
|
|
$ |
6.27
|
|
$9.00
- $12.90
|
|
4.94
|
|
|
130,037
|
|
$ |
10.46
|
|
|
4.94
|
|
|
130,037
|
|
$ |
10.46
|
|
$13.50
-
|
|
3.3
|
|
|
358,336
|
|
$ |
14.17
|
|
|
3.3
|
|
|
358,336
|
|
$ |
14.17
|
|
$19.20
-
|
|
2.65
|
|
|
306,668
|
|
$ |
22.84
|
|
|
2.65
|
|
|
306,668
|
|
$ |
22.84
|
|
Total |
|
4.84
|
|
|
1,639,842
|
|
$ |
11.46
|
|
|
4.62
|
|
|
1,523,536
|
|
$ |
11.82
|
|
|
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] |
|
|
|
|
|
Weighted
|
|
|
|
|
|
|
Average
|
|
|
|
|
|
|
Grant
|
|
|
|
Number of
|
|
|
Date Fair
|
|
|
|
Units
|
|
|
Value
|
|
Total awards outstanding at December 31, 2011
|
|
120,021
|
|
$ |
6.14
|
|
Units granted
|
|
-
|
|
$ |
-
|
|
Units Exercised/Released
|
|
(76,989
|
) |
$ |
5.95
|
|
Units Cancelled/Forfeited
|
|
-
|
|
$ |
-
|
|
Total awards outstanding at December 31, 2012
|
|
43,032
|
|
$ |
6.49
|
|
Units granted
|
|
-
|
|
$ |
-
|
|
Units Exercised/Released
|
|
(28,739
|
) |
$ |
6.99
|
|
Units Cancelled/Forfeited
|
|
-
|
|
$ |
-
|
|
Total awards outstanding at December 31, 2013
|
|
14,293
|
|
$ |
5.47
|
|
|
|
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Restricted Stock Units, Vested and Expected to Vest [Table Text Block] |
|
|
Year Ended |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
December 31, |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2014 |
|
|
2015 |
|
|
2016 |
|
|
2017 |
|
|
Thereafter |
|
|
Total |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Scheduled vesting—restricted stock units
|
|
14,293
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
14,293
|
|
|
|
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|
|
Year
|
|
|
|
12/31/2011
|
|
|
|
|
|
Average risk-free interest rate |
|
3.35%
|
|
Average expected life- years |
|
10
|
|
Expected volatility |
|
94.32%
|
|
Expected dividends |
|
0
|
|
|
|
Schedule of Share-based Compensation, Activity [Table Text Block] |
|
|
Shares of
|
|
|
Amount
|
|
|
|
Common
S
tock
|
|
|
|
|
|
|
|
|
|
|
|
Stock-based compensation
|
|
2,264
|
|
$ |
3,125
|
|
|
|