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Consolidated Statements 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, 2016 $ 170 $ 24 $ 137,912 $ (1,084) $ (2,640) $ 102,032 $ 236,414
Net income 55,439 55,439
Other comprehensive income (loss) 2,933 2,933
Stock-based employee compensation expense 951 951
Issuance of restricted shares, net 1 (1,621) 1,084 (536)
Balance at Dec. 31, 2017 171 24 137,242 293 157,471 295,201
Net income 42,503 42,503
Other comprehensive income (loss) (89) (89)
Stock-based employee compensation expense 4,802 4,802
Issuance of restricted shares, net 133 133
Balance at Dec. 31, 2018 171 24 142,177 204 200,566 343,142
Effect of adoption of ASU 2014-09 592 592
Net income 8,477 8,477
Other comprehensive income (loss) (1,218) (1,218)
Stock-based employee compensation expense 819 819
Issuance of restricted shares, net 2 (1,111) (1,109)
Balance at Dec. 31, 2019 $ 173 $ 24 $ 141,885 $ (1,014) $ 209,043 $ 350,111