Leases (Tables)

9 Months Ended

Sep. 30, 2019

Leases

Summary of components of lease expense

	Three Months Ended				Nine Months Ended
		September 30,				September 30,
	2019		2018		2019		2018
Operating lease cost	$	1,364	$	817	$	3,796	$	2,248
Finance lease cost:
Amortization of leased assets		116		254		525		842
Interest on lease liabilities		16		27		43		97
Total finance lease cost		132		281		568		939
Total lease cost	$	1,496	$	1,098	$	4,364	$	3,187

Summary of supplemental balance sheet information related to leases

	September 30, 2019
Operating leases:
Operating lease right-of-use assets	$	22,140
Current operating lease liabilities	$	4,214
Noncurrent operating lease liabilities		21,231
Total operating lease liabilities	$	25,445
Finance leases:
Property and equipment	$	3,477
Accumulated amortization		(2,925)
Property and equipment, net	$	552
Current obligations of finance leases	$	334
Finance leases, net of current obligations		6
Total finance lease liabilities	$	340
Weighted average remaining lease term (in years):
Operating leases		8.6
Finance leases		0.5
Weighted average discount rate:
Operating leases		4.43	%
Finance leases		6.06	%

Summary of supplemental cash flow information related to leases

	Nine Months Ended
	September 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$	3,010
Operating cash flows for finance leases		38
Financing cash flows for finance leases		757
Leased assets obtained in exchange for lease liabilities:
Operating leases*	$	4,926
Finance leases		—

Summary of maturities of operating lease liabilities

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

	Operating leases		Finance leases
2019	$	1,093	$	192
2020		4,451		150
2021		3,989		4
2022		3,489		—
2023		3,267		—
Thereafter		15,365		—
Total minimum lease payments		31,654		346
Less imputed interest		(6,209)		(6)
Present value of lease liabilities		25,445		340
Less current portion		(4,214)		(334)
Total long-term lease liabilities	$	21,231	$	6

Summary of maturities of finance lease liabilities

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

	Operating leases		Finance leases
2019	$	1,093	$	192
2020		4,451		150
2021		3,989		4
2022		3,489		—
2023		3,267		—
Thereafter		15,365		—
Total minimum lease payments		31,654		346
Less imputed interest		(6,209)		(6)
Present value of lease liabilities		25,445		340
Less current portion		(4,214)		(334)
Total long-term lease liabilities	$	21,231	$	6

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