Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of future minimum payments for obligations under non cancellable lease obligations

At December 31, 2017, future minimum payments for obligations under non-cancellable lease obligations, and related sublease income, are as follows (in thousands):

Years ended December 31,	Lease Commitments		Sublease Income
2018	$	9,503	$	(2,116	)
2019	10,438		(1,970		)
2020	9,429		(1,186		)
2021	7,877		—
2022	8,116		—
Thereafter	31,733		—
Total minimum lease payments	$	77,096	$	(5,272	)

Schedule of lease exit liability

The following table presents a roll forward of the lease exit liability for the years ended December 31, 2017 and 2016 (in thousands):

	Lease Exit Costs
Accrual at December 31, 2015	$	1,988
Expense	3,065
Cash Payments	(2,396		)
Accrual at December 31, 2016	$	2,657
Expense	(133		)
Cash Payments	(1,170		)
Accrual at December 31, 2017	$	1,354

The following table presents a roll forward of this severance liability for the years ended December 31, 2017 and 2016 (in thousands):

	Executive Severance and Reorganization Costs
Accrual at December 31, 2015	$	2,803
Severance Costs	1,783
Cash Payments	(4,215		)
Accrual at December 31, 2016	$	371
Cash Payments	(308		)
Accrual at December 31, 2017	$	63

Roll forward of severance liability

The following table presents a roll forward of the lease exit liability for the years ended December 31, 2017 and 2016 (in thousands):

	Lease Exit Costs
Accrual at December 31, 2015	$	1,988
Expense	3,065
Cash Payments	(2,396		)
Accrual at December 31, 2016	$	2,657
Expense	(133		)
Cash Payments	(1,170		)
Accrual at December 31, 2017	$	1,354

The following table presents a roll forward of this severance liability for the years ended December 31, 2017 and 2016 (in thousands):

	Executive Severance and Reorganization Costs
Accrual at December 31, 2015	$	2,803
Severance Costs	1,783
Cash Payments	(4,215		)
Accrual at December 31, 2016	$	371
Cash Payments	(308		)
Accrual at December 31, 2017	$	63

Schedule of purchase obligations

At December 31, 2017, the Company had the following purchase obligations (in thousands):

	Total		Less Than 1 Year		1 - 3 Years		3 - 5 Years		More Than 5 Years
Purchase obligations	$	5,654	$	3,226	$	2,428	$	—	$	—