Balance Sheet Components

6 Months Ended

Jun. 30, 2019

Balance Sheet Related Disclosures [Abstract]



	June 30, 2019 (unaudited)		December 31, 2018
	(in thousands)
Accounts receivable:
Billed accounts receivable, net	$	74,231	$	87,347
Unbilled revenues, net	48,566		35,099
Total	$	122,797	$	122,446



Property and equipment:
Computer hardware (useful life of 3 years)	$	15,429		$	14,160
Software (useful life of 1 to 7 years)	5,284			5,042
Furniture and fixtures (useful life of 5 years)	4,901			4,653
Leasehold improvements (useful life of 5 years)	4,423			3,396
Less: Accumulated depreciation	(19,643		)	(20,574		)
Total	$	10,394		$	6,677



Other current liabilities:
Accrued variable compensation	$	19,277	$	22,258
Estimated fair value of contingent consideration liability (1)	8,780		7,156
Current operating lease liabilities	8,379		—
Deferred revenues	7,313		8,111
Other current liabilities	6,659		6,021
Payroll related costs	3,429		3,064
Accrued medical claims expense	1,996		1,431
Professional fees	1,667		1,782
Accrued subcontractor fees	608		563
Total	$	58,108	$	50,386



Other non-current liabilities:
Deferred income taxes	$	11,257	$	9,253
Deferred compensation liability	5,048		4,278
Non-current software accrual	5,039		3,407
Other non-current liabilities	7,311		5,032
Total	$	28,655	$	21,970

(1)

As of June 30, 2019, represents the fair value estimate of revenue and earnings-based contingent consideration that may be realized by Southport, Stone Temple, Elixiter and Sundog, 12 months after the respective acquisitions. As of December 31, 2018, represents the fair value estimate of revenue and earnings-based contingent consideration that may be realized by Southport, Stone Temple and Elixiter 12 months after the respective acquisitions.