Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jul. 14, 2015	Jun. 30, 2015	Dec. 31, 2014	Dec. 03, 2013	Aug. 30, 2013	Aug. 20, 2010	Aug. 12, 2010
$100 Million Term Loan Facility \| Secured Debt
Maximum borrowing capacity	$ 100,000			$ 100,000					$ 100,000
$253 Million Term Loan Facility \| Secured Debt
Maximum borrowing capacity	253,000	$ 253,000		253,000				$ 253,000
$148 Million Credit Facility \| Line of Credit Facility
Maximum borrowing capacity	148,000	148,000	$ 148,000	148,000	$ 148,000
$44 Million Term Loan Facility \| Secured Debt
Maximum borrowing capacity	44,000	44,000		44,000		$ 44,000
$22 Million Term Loan Facility \| Secured Debt
Maximum borrowing capacity	$ 22,000	$ 22,000	$ 22,000	$ 22,000			$ 22,000