Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts receivable, net	$ 149,496	$ 85,319	$ 83,518
Prepaid expenses and other assets	25,865	24,151	22,596
Accrued expenses and other liabilities	105,788	87,802	84,446
Balances Before Adoption of ASC 606 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts receivable, net	144,095		83,518
Prepaid expenses and other assets	22,570		22,596
Accrued expenses and other liabilities	97,092		$ 84,446
ASU 2014-09 [Member] | Impact of Adoption [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts receivable, net	5,401	1,801
Prepaid expenses and other assets	3,295	1,555
Accrued expenses and other liabilities	$ 8,696	$ 3,356