Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
Accumulated Other Comprehensive Income (Loss) - Summary of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
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 (loss), net of tax $ 5,521,000 $ (5,777,000) 19,927,000 $ (4,728,000)  
Ending Balance (167,695,000)   (167,695,000)    
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 (loss), net of tax     19,927,000    
Ending Balance $ 13,157,000   13,157,000    
Accumulated Gain (Loss), Net, Cash Flow Hedge, 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     18,764,000    
Reclassifications of unrealized loss on derivatives into Net loss, net of income tax of $0 [1]     $ 1,163,000    
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
[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.