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Consolidated Statement of Stockholders' Equity - USD ($)
$ in Thousands
Common Stock [Member]
Common Class A [Member]
Common Stock [Member]
Common Class B [Member]
Additional Paid-in Capital [Member]
Treasury Stock [Member]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Total
Balance at Dec. 31, 2013 $ 145 $ 24 $ 88,620 $ (12,319) $ 833 $ 23,057 $ 100,360
Net income           17,808 17,808
Other comprehensive loss         (13,934)   (13,934)
Follow-on stock offering 22   51,498 11,464     62,984
Stock-based employee compensation cost     1,286       1,286
Exercise of stock options     190 408     598
Issuance of restricted shares, net 1   (1,180) 447     (732)
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation     834       834
Balance at Dec. 31, 2014 168 24 141,248   (13,101) 40,865 169,204
Net income           42,085 42,085
Other comprehensive loss         (4,443)   (4,443)
Stock-based employee compensation cost 1   1,295       1,296
Exercise of stock options 1   1,091       1,092
Issuance of restricted shares, net     (3,666) 1,586     (2,080)
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation             0
Balance at Dec. 31, 2015 170 24 139,968 (3,408) (17,544) 82,950 202,160
Purchase of treasury stock       (4,994)     (4,994)
Net income           16,835 16,835
Other comprehensive loss         14,904   14,904
Stock-based employee compensation cost     1,178       1,178
Exercise of stock options     (27) 59     32
Issuance of restricted shares, net     (3,207) 2,265     (942)
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation             0
Balance at Dec. 31, 2016 $ 170 $ 24 $ 137,912 $ (1,084) $ (2,640) 102,032 236,414
Prior Period Reclassification Adjustment           $ 2,247 $ 2,247