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Condensed Consolidated Statement of Stockholders' Equity (Unaudited) (USD $)
In Thousands, except Share data, unless otherwise specified
Common Class A [Member]
Common Stock [Member]
2007 Incentive Plan [Member]
Common Class A [Member]
Common Stock [Member]
USD ($)
Common Class A [Member]
Treasury Stock [Member]
USD ($)
Common Stock [Member]
401(k) Plan [Member]
USD ($)
Common Stock [Member]
2007 Incentive Plan [Member]
Common Stock [Member]
USD ($)
Retained Earnings [Member]
USD ($)
Treasury Stock [Member]
2007 Incentive Plan [Member]
USD ($)
Treasury Stock [Member]
USD ($)
Accumulated Other Comprehensive Income (Loss) [Member]
USD ($)
401(k) Plan [Member]
USD ($)
2007 Incentive Plan [Member]
USD ($)
Total
USD ($)
Balance at December 31, 2013 at Dec. 31, 2012                          
Net income             $ 2,868           $ 2,868
Issuance of common stock:                          
Common shares issued, value       13       (291)     13 (291)  
Common shares issued (in Shares) 236,294     1,080 312,961     (22,556)          
Share-based compensation   1,001       2,050             3,051
Balance at June 30, 2014 at Dec. 31, 2013   $ 15,321 $ (22,398)     $ 483,055 $ (251,000)   $ (40,559) $ (10,409)     $ 174,010
Balance at June 30, 2014 (in Shares) at Dec. 31, 2013   7,331,574 (1,578,554)     57,010,878     (4,768,925)