Consolidated Statements of Shareholders' Equity - USD ($)
$ in Thousands
Common Stock [Member]
Series A
Common Stock [Member]
Series B
Common Stock [Member]
Additional Paid-in Capital [Member]
Treasury Stock [Member]
Series A
Treasury Stock [Member]
Accumulated Other Comprehensive Loss [Member]
Accumulated Deficit [Member]
Noncontrolling Interests [Member]
Total
Beginning Balance at Dec. 31, 2013     $ 223 $ 496,682   $ (3,113) $ (15,093) $ (310,099) $ 176 $ 168,776
Beginning Balance, Shares Common Stock at Dec. 31, 2013 19,931,599 2,397,155                
Beginning Balance, Treasury Stock at Dec. 31, 2013         (495,200)          
Net income (loss)               92,929 (152) 92,777
Other comprehensive income (loss)             (42,274)     (42,274)
Capital contributions from noncontrolling interests                 232 232
Treasury stock purchases, shares         (449,436)          
Treasury stock purchases           (4,974)       (4,974)
Issuance of shares for restricted stock units, shares 210,522                  
Issuance of shares for restricted stock units     2 (2)            
Issuance of shares for stock option exercises, shares 190,462                  
Issuance of shares for stock option exercises     2 939           941
Excess tax benefit on share-based compensation       933           933
Share-based compensation       768           768
Conversion of Series B to Series A, shares 8,918 (8,918)                
Dividends               (91,160)   (91,160)
Ending Balance at Dec. 31, 2014     227 499,320   (8,087) (57,367) (308,330) 256 126,019
Ending Balance, Shares Common Stock at Dec. 31, 2014 20,341,501 2,388,237                
Ending Balance, Shares Treasury Stock at Dec. 31, 2014         (944,636)          
Net income (loss)               (17,842) (415) (18,257)
Other comprehensive income (loss)             18,925     18,925
Capital contributions from noncontrolling interests                 1,210 1,210
Treasury stock purchases, shares         (472,245)          
Treasury stock purchases           (3,146)       (3,146)
Issuance of shares for restricted stock units, shares 162,274                  
Issuance of shares for restricted stock units     2 (2)            
Issuance of shares for stock option exercises, shares 18,000                  
Issuance of shares for stock option exercises       71           71
Excess tax benefit on share-based compensation       557           557
Share-based compensation       605           605
Redeemable non-controlling interests       (102)         18 (84)
Conversion of Series B to Series A, shares 728 (728)                
Dividends               (7,050)   (7,050)
Ending Balance at Dec. 31, 2015     229 500,449   (11,233) (38,442) (333,222) 1,069 118,850
Ending Balance, Shares Common Stock at Dec. 31, 2015 20,522,503 2,387,509                
Ending Balance, Shares Treasury Stock at Dec. 31, 2015         (1,416,881)          
Net income (loss)               (19,310) 77 (19,233)
Other comprehensive income (loss)             (866)     (866)
Distributions to noncontrolling interests                 (308) $ (308)
Capital contributions from noncontrolling interests       (396)         396  
Issuance of shares for restricted stock units, shares 97,203                  
Issuance of shares for restricted stock units     1 (1)            
Issuance of shares for stock option exercises, shares   85,926               85,926
Issuance of shares for stock option exercises     1 155           $ 156
Share-based compensation       640           640
Redeemable non-controlling interests       (1,295)           (1,295)
Conversion of Series B to Series A, shares 755 (755)                
Dividends               (8,792)   (8,792)
Ending Balance at Dec. 31, 2016     $ 231 $ 499,552   $ (11,233) $ (39,308) $ (361,324) $ 1,234 $ 89,152
Ending Balance, Shares Common Stock at Dec. 31, 2016 20,620,461 2,472,680                
Ending Balance, Shares Treasury Stock at Dec. 31, 2016         (1,416,881)