Leases (Tables)

6 Months Ended

Jun. 30, 2019

Leases

Summary of components of lease expense

	Three Months Ended				Six Months Ended
		June 30,				June 30,
	2019		2018		2019		2018
Operating lease cost	$	1,317	$	740	$	2,432	$	1,431
Finance lease cost:
Amortization of leased assets		147		262		409		588
Interest on lease liabilities		11		31		27		70
Total finance lease cost		158		293		436		658
Total lease cost	$	1,475	$	1,033	$	2,868	$	2,089

Summary of supplemental balance sheet information related to leases

	June 30, 2019
Operating leases:
Operating lease right-of-use assets	$	22,602
Current operating lease liabilities	$	4,070
Noncurrent operating lease liabilities		21,666
Total operating lease liabilities	$	25,736
Finance leases:
Property and equipment	$	3,477
Accumulated amortization		(2,809)
Property and equipment, net	$	668
Current obligations of finance leases	$	548
Finance leases, net of current obligations		9
Total finance lease liabilities	$	557
Weighted average remaining lease term (in years):
Operating leases		8.89
Finance leases		0.70
Weighted average discount rate:
Operating leases		4.44	%
Finance leases		6.50	%

Summary of supplemental cash flow information related to leases

	Six Months Ended
	June 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$	1,959
Operating cash flows for finance leases		30
Financing cash flows for finance leases		541
Leased assets obtained in exchange for lease liabilities:
Operating leases*	$	4,388
Finance leases		—

Summary of maturities of operating lease liabilities

Maturities of lease liabilities as of June 30, 2019 were as follows:

	Operating leases		Finance leases
2019	$	2,102	$	417
2020		4,283		150
2021		3,817		4
2022		3,313		—
2023		3,084		—
Thereafter		15,289		—
Total minimum lease payments		31,888		571
Less imputed interest		(6,152)		(14)
Present value of lease liabilities		25,736		557
Less current portion		(4,070)		(548)
Total long-term lease liabilities	$	21,666	$	9

Summary of maturities of finance lease liabilities

Maturities of lease liabilities as of June 30, 2019 were as follows:

	Operating leases		Finance leases
2019	$	2,102	$	417
2020		4,283		150
2021		3,817		4
2022		3,313		—
2023		3,084		—
Thereafter		15,289		—
Total minimum lease payments		31,888		571
Less imputed interest		(6,152)		(14)
Present value of lease liabilities		25,736		557
Less current portion		(4,070)		(548)
Total long-term lease liabilities	$	21,666	$	9

Summary of future minimum lease payments for finance leases

As previously disclosed in the 2018 Form 10-K and under the previous lease accounting standard, future minimum lease payments for operating and finance leases having initial or remaining cancellable lease terms in excess of one year would have been as follows as of December 31, 2018:
​

	Payments due by period
			Less						More
			than 1						than 5
	Total		year		1-3 years		3-5 years		years
Capital leases	$	1,141	$	987	$	154	$	—	$	—
Operating leases		32,367		3,793		7,183		6,114		15,277
Total	$	33,508	$	4,780	$	7,337	$	6,114	$	15,277

Summary of future minimum lease payments for operating leases

As previously disclosed in the 2018 Form 10-K and under the previous lease accounting standard, future minimum lease payments for operating and finance leases having initial or remaining cancellable lease terms in excess of one year would have been as follows as of December 31, 2018:
​

	Payments due by period
			Less						More
			than 1						than 5
	Total		year		1-3 years		3-5 years		years
Capital leases	$	1,141	$	987	$	154	$	—	$	—
Operating leases		32,367		3,793		7,183		6,114		15,277
Total	$	33,508	$	4,780	$	7,337	$	6,114	$	15,277