Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments (Details)

v3.5.0.2
Derivative Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Apr. 24, 2017
Dec. 31, 2015
Dec. 20, 2012
Derivative Instruments and Hedging Activities Disclosure [Abstract]              
Derivative, notional amount $ 187,500   $ 187,500   $ 250,000    
Derivative, fixed interest rate 0.8525%   0.8525%   1.05%   2.3525%
Change in fair value of derivative instrument, net of tax $ (1,238) $ 18 $ (1,487) $ (482)      
Interest Rate Derivative Liabilities, at Fair Value $ 2,528 $ 568 2,528 $ 568   $ 169  
Estimated unrealized loss to be realized in the next twelve months     $ 800