Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2019

Commitments And Contingencies Disclosure [Abstract]

Components of Lease Cost for Operating and Finance Leases

The components of lease cost for operating and finance leases for the three months ended March 31, 2019 were:

Operating leases	$ (in thousands)
Operating lease cost	$	694
Variable lease cost		263
		957
Short-term lease cost		119

Finance leases
Depreciation on finance leases		47
Interest on finance leases		7
		54
Total lease cost	$	1,130

Summary of Weighted Average Remaining Lease Term and Weighted Average Discount Rate for Operating and Finance Leases

The weighted average remaining lease term and the weighted average discount rate for operating and finance leases at March 31, 2019 was:

	Operating Lease			Finance Leases
Weighted average discount rate		9.0	%		5.9	%
Weighted average remaining lease term (years)	9.4			1.5

Summary of Maturity of Lease Liabilities for Operating and Finance Leases

The following table reconciles the undiscounted cash flows for the operating and finance leases at March 31, 2019 to the operating and finance lease liabilities recorded on the balance sheet:

Maturity of lease liabilities	Operating Lease		Finance Leases
	(in thousands)
2019	$	2,390	$	215
2020		3,270		214
2021		3,369		2
2022		3,470		-
2023		3,574		-
Thereafter		18,067		-
Total lease payments		34,140		431
Less: imputed interest		10,449		21
Total lease liabilities	$	23,691	$	410

Current lease liabilities		1,374		269
Long-term lease liabilities		22,317		141

Schedule of Aggregate Future Lease Payments for Operating and Capital Leases

The aggregate future lease payments for operating and capital leases as of December 31, 2018 are as follows:

	Operating lease		Capital leases
	(in thousands)
2019	$	3,175	$	287
2020		3,270		214
2021		3,369		2
2022		3,470		—
2023		3,574		—
Thereafter		18,067		—
Total future minimum lease payments	$	34,925	$	503
Less amounts representing interest				27
Capital lease obligations at December 31, 2018				476
Less current portion of capital lease obligations				266
Capital lease obligations, net of current portion			$	210