Commitments and Contingencies - Schedule of Minimum Payments Over the Terms of Applicable Contracts (Details) $ in Thousands	Dec. 31, 2018 USD ($)
2019	$ 19,437
2020	9,495
2021	7,566
2022	5,439
2023	4,610
Thereafter	21,969
Total minimum payments	68,516
Operating Lease Obligations [Member]
2019	6,765
2020	6,186
2021	6,088
2022	5,180
2023	4,386
Thereafter	21,969
Total minimum payments	50,574
Capital Lease Obligations [Member]
2019	1,325
2020	1,041
2021	571
2022	259
2023	224
Thereafter
Total minimum payments	3,420
Other Commitments [Member]
2019	11,347	[1],[2]
2020	2,268	[1],[2]
2021	907	[1],[2]
2022		[1],[2]
2023		[1],[2]
Thereafter		[1],[2]
Total minimum payments	$ 14,522	[1],[2]

[1] Other commitments consist of minimum commitments under non-cancelable contracts for services relating to telecommunications, IT maintenance, financial services and employment contracts with certain employees (which consist of severance arrangements that, if exercised, would become payable in less than one year).

[2] We had $12.9 million of standby letters of credits (LOCs) under which there were no minimum payment requirements at December 31, 2018. LOCs are commitments issued to third party beneficiaries, underwritten by a third party bank, representing funding responsibility in the event of third party demands or contingent events. The outstanding balance of our standby LOCs reduces the amount available to us from our revolving credit facility. There were no claims made against any standby LOCs during the year ended December 31, 2018.