Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Lease expense and other information related to leases

The components of lease expense were as follows (in thousands):

	Three Months Ended June 30,					Six Months Ended June 30,
	2018			2017		2018			2017
Finance lease cost:
Amortization of right-of-use assets	$	2,723		$	2,772	$	5,357		$	5,596
Interest on lease liabilities	128			170		247			367
Operating lease cost	2,505			2,619		5,134			5,130
Short-term lease cost	154			140		355			243
Variable lease cost	730			638		1,507			1,323
Sublease income	$	(119	)	$	—	$	(225	)	$	—
Total lease cost	$	6,121		$	6,339	$	12,375		$	12,659

Other information related to leases was as follows (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$	2,655		$	2,449		$	5,255		$	4,972
Operating cash flows from finance leases	95			155			204			334
Financing cash flows from finance leases	2,013			2,564			4,172			5,366
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	(1,026		)	506			91			3,866
Finance leases	4,043			18			4,142			102
Weighted average remaining lease term (years):
Operating leases	3.7			4.3			3.7			4.3
Finance leases	2.2			2.4			2.2			2.4
Weighted average discount rate:
Operating leases	4.1		%	4.0		%	4.1		%	4.0		%
Finance leases	3.7		%	3.0		%	3.7		%	3.0		%

Future minimum lease payments under non-cancellable leases

Future minimum lease payments under non-cancellable leases as of June 30, 2018 were as follows (in thousands):

	Operating Leases			Finance Leases
2018	$	9,954		$	7,636
2019	6,111			3,819
2020	4,454			1,555
2021	3,024			435
2022	2,080			48
Thereafter	749			20
Total future lease payments	26,372			13,513
Less: Amount representing interest	(2,618		)	(496		)
Present value of future payments	23,754			13,017
Less: Current portion	(8,620		)	(7,332		)
Long-term portion	$	15,134		$	5,685

Future minimum lease payments under non-cancellable leases

Future minimum lease payments under non-cancellable leases as of June 30, 2018 were as follows (in thousands):

	Operating Leases			Finance Leases
2018	$	9,954		$	7,636
2019	6,111			3,819
2020	4,454			1,555
2021	3,024			435
2022	2,080			48
Thereafter	749			20
Total future lease payments	26,372			13,513
Less: Amount representing interest	(2,618		)	(496		)
Present value of future payments	23,754			13,017
Less: Current portion	(8,620		)	(7,332		)
Long-term portion	$	15,134		$	5,685