Schedule I - Balance Sheet (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Current assets        
Cash and cash equivalents $ 17,977 $ 35,722 $ 10,680 $ 21,742
Prepaid expenses 2,609 4,642    
Total current assets 58,502 73,644    
Deferred tax assets 9 37    
Total assets 634,092 711,147    
Liabilities and Stockholders’ Equity        
Total current liabilities 33,029 29,949    
Long-term Debt, Excluding Current Maturities 547,238 533,290    
Other long-term liabilities 30,440 32,024    
Liabilities 617,664 610,610    
Common stock 149 149    
Additional paid-in capital 177,276 177,276    
Retained Earnings (Accumulated Deficit) (156,451) (75,077)    
Accumulated other comprehensive (loss) income (4,546) (1,811)    
Stockholders' Equity Attributable to Parent 16,428 100,537 63,756 91,843
Liabilities and Equity 634,092 711,147    
Parent Company [Member]        
Current assets        
Cash and cash equivalents 10,171 25,972 $ 8,513 $ 16,538
Prepaid expenses 40 63    
Total current assets 10,211 26,035    
Deferred tax assets 0 3,528    
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures 153,926 203,390    
Total assets 164,137 232,953    
Liabilities and Stockholders’ Equity        
Accounts Payable and Accrued Liabilities, Current 36 0    
Intercompany payables 93 20    
Total current liabilities 129 20    
Long-term Debt, Excluding Current Maturities 146,284 131,125    
Other long-term liabilities 1,296 1,271    
Liabilities 147,709 132,416    
Common stock 149 149    
Additional paid-in capital 177,276 177,276    
Retained Earnings (Accumulated Deficit) (156,451) (75,077)    
Accumulated other comprehensive (loss) income (4,546) (1,811)    
Stockholders' Equity Attributable to Parent 16,428 100,537    
Liabilities and Equity $ 164,137 $ 232,953