Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income (Loss) - Summary of Accumulated Other Comprehensive Income (Loss) (Details)

v3.8.0.1
Accumulated Other Comprehensive Income (Loss) - Summary of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Jan. 01, 2018
Dec. 31, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance $ 102,736,000      
Adjusted balance at January 1, 2018       $ 80,016,000
Total other comprehensive income, net of tax 14,406,000 $ 1,049,000    
Ending Balance 68,220,000      
Unrealized loss on derivatives recognized through Accumulated other comprehensive loss, tax 0      
Reclassifications of unrealized loss on derivatives into net income, tax 0      
AOCI Attributable to Parent        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance (7,375,000)      
Adjusted balance at January 1, 2018       (6,770,000)
Total other comprehensive income, net of tax 14,406,000      
Ending Balance 7,636,000      
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Unrealized gain on derivatives recognized through Accumulated other comprehensive income (loss), net of income tax of $0 13,668,000      
Reclassifications of unrealized loss on derivatives into Net loss, net of income tax of $0 [1] $ 738,000      
Accounting Standards Update 2017-12 | AOCI Attributable to Parent        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Impact of adoption of ASU 2017-12       605,000
New Accounting Pronouncement, Early Adoption, Effect | Accounting Standards Update 2017-12 | AOCI Attributable to Parent        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Impact of adoption of ASU 2017-12     $ 605,000 $ 605,000
[1] Amounts reclassified into net loss are included in Interest expense on the condensed consolidated statement of operations. See note 7, Derivatives, for further information.