Condensed Consolidated Statements of Changes in Stockholders' Equity - 6 months ended Jun. 30, 2015 - USD ($) shares in Thousands, $ in Thousands	Common Stock Common Class A	Common Stock Common Class B	Additional Paid-in Capital	Treasury Stock Common Class A	Retained Earnings	Accumulated Comprehensive Loss	Total
Balance at the beginning of the period at Dec. 31, 2014	$ 1	$ 3	$ 246,858	$ (1,961)	$ 12,098	$ (586)	$ 256,413
Balance at the beginning of the period (in shares) at Dec. 31, 2014	14,519	30,027
Changes in Stockholders' Equity
Net income					5,894		5,894
Stock-based compensation			2,687				2,687
Vesting of restricted stock			274	(1,079)			(805)
Vesting of restricted stock (in shares)	304
Issuance of shares			5,407				5,407
Issuance of shares (in shares)	479
Balance at the end of the period at Jun. 30, 2015	$ 1	$ 3	$ 255,226	$ (3,040)	$ 17,992	$ (586)	$ 269,596
Balance at the end of the period (in shares) at Jun. 30, 2015	15,302	30,027