Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities
Net income	$ 676	$ 97
Adjustments to reconcile net income to net cash provided by operating activities:
Change in deferred tax assets	359	63
Depreciation of property and equipment	223	269
Stock-based compensation	67	88
Amortization of intangible assets	161	106
Change in fair value of contingent consideration	(334)	17
Changes in operating assets and liabilities:
Accounts receivable	870	(971)
Net costs and estimated earnings in excess of billings	48	58
Inventories	84	25
Prepaid expenses and other assets	(329)	(22)
Accounts payable and accrued expenses	(862)	661
Net cash provided by operating activities	963	391
Cash flows from investing activities
Purchases of property and equipment	(113)	(65)
Capitalized software	(54)
Cash paid for acquisition		(137)
Net cash used in investing activities	(167)	(202)
Cash flows from financing activities
Payments on long-term debt	(634)	(458)
Deferred payment for prior business combination		(112)
Repurchases of common stock	(442)
Proceeds from stock option exercises	125	3
Net cash used in financing activities	(951)	(567)
Decrease in cash and cash equivalents	(155)	(378)
Cash and cash equivalents at beginning of period	18,701	11,818
Cash and cash equivalents at end of period	$ 18,546	$ 11,440