8. Composition of Certain Financial Statement Captions

Accounts receivable may include amounts invoiced for undelivered products and services at each period end. Undelivered products and services are included as a component of the deferred revenue balance on the accompanying consolidated balance sheets.

	December 31, 2017			March 31, 2017
Accounts receivable, gross	$	88,437		$	93,377
Sales return reserve		(5,580	)		(7,213	)
Allowance for doubtful accounts		(3,441	)		(2,757	)
Accounts receivable, net	$	79,416		$	83,407

Inventory is comprised of computer systems and components.

Prepaid expenses and other current assets are summarized as follows:

	December 31, 2017		March 31, 2017
Prepaid expenses	$	16,409	$	14,884
Other current assets		1,535		3,085
Prepaid expenses and other current assets	$	17,944	$	17,969

Equipment and improvements are summarized as follows:

	December 31, 2017			March 31, 2017
Computer equipment	$	26,886		$	22,014
Internal-use software		14,359			13,053
Furniture and fixtures		11,448			10,472
Leasehold improvements		16,231			16,360
Equipment and improvements, gross		68,924			61,899
Accumulated depreciation and amortization		(41,787	)		(34,473	)
Equipment and improvements, net	$	27,137		$	27,426

The current portion of deferred revenues are summarized as follows:

	December 31, 2017		March 31, 2017
Professional services	$	21,887	$	21,889
Software license, hardware and other		12,251		12,680
Support and maintenance		9,436		9,691
Software related subscription services		9,269		8,123
Deferred revenue	$	52,843	$	52,383

Accrued compensation and related benefits are summarized as follows:

	December 31, 2017		March 31, 2017
Payroll, bonus and commission	$	13,198	$	15,836
Vacation		8,700		8,677
Accrued compensation and related benefits	$	21,898	$	24,513

Other current and noncurrent liabilities are summarized as follows:

	December 31, 2017		March 31, 2017
Customer credit balances and deposits	$	4,406	$	4,124
Care services liabilities		3,393		4,957
Accrued self insurance expense		2,880		1,697
Accrued consulting and outside services		2,384		2,496
Deferred rent and lease obligations		2,228		2,427
Accrued EDI expense		2,025		2,490
Accrued royalties		1,891		2,033
Accrued outsourcing costs		1,853		1,588
Accrued legal expense		1,560		853
Accrued hosting costs		973		401
Employee benefit plan withholdings		655		739
Sales tax payable		601		448
Contingent consideration and other liabilities related to acquisitions		—		18,817
Other accrued expenses		5,304		3,705
Other current liabilities	$	30,153	$	46,775

Deferred rent and lease obligations	$	11,116	$	11,402
Uncertain tax positions		4,890		4,762
Other liabilities		348		297
Other noncurrent liabilities	$	16,354	$	16,461