Annual report pursuant to Section 13 and 15(d)

Derivative Instruments and Hedging Activities - Effects of Derivative Instruments in Accumulated Other Comprehensive Income (Details)

v3.8.0.1
Derivative Instruments and Hedging Activities - Effects of Derivative Instruments in Accumulated Other Comprehensive Income (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2017
USD ($)
Unrealized Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss) [Roll Forward]  
Beginning balance $ 294,306
Ending balance 336,620
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent  
Unrealized Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss) [Roll Forward]  
Beginning balance (2,042)
Unrealized gain recognized in AOCI 1,095
Loss reclassified from AOCI to other expenses, net (798)
Ending balance $ (1,745)