Annual report pursuant to Section 13 and 15(d)

Stockholder's Equity - Roll Forward Activity (Details)

v3.8.0.1
Stockholder's Equity - Roll Forward Activity (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning Balance $ 214,945,000 $ 201,065,000 $ 257,566,000
Unrealized loss on derivatives recognized through Accumulated other comprehensive income (loss), net of income tax of $0 (3,842,000) (2,673,000) (16,041,000)
Reclassifications of unrealized loss on derivatives into Net loss, net of income tax of $0 5,424,000 7,262,000 7,300,000
Net current period other comprehensive income (loss) 1,582,000 4,589,000 (8,741,000)
Ending Balance 102,736,000 214,945,000 201,065,000
Unrealized loss on derivatives recognized through Accumulated other comprehensive income (loss), income tax 0 0 0
Reclassifications of unrealized loss on derivatives into Net loss, income tax 0 0 0
Accumulated Other Comprehensive Income (Loss)      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning Balance (8,957,000) (13,546,000) (4,805,000)
Net current period other comprehensive income (loss) 1,582,000 4,589,000 (8,741,000)
Ending Balance $ (7,375,000) $ (8,957,000) $ (13,546,000)