CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 4,209	$ 3,632	$ 1,730
Adjustments to reconcile net income to cash provided by operating activities:
Loss on extinguishment of debt	51
Loss on disposal of equipment and leasehold improvements	46	57	22
Depreciation and amortization	847	695	617
Amortization of debt issue costs and other assets	94	42	31
Share based compensation expense	730	453	74
(Reduction of) provision for allowance for doubtful accounts	(10)	(36)	48
(Reduction of) provision for inventory reserve	(32)	(107)	93
Deferred income tax benefit	(2,095)	(892)	(552)
Net (increase) decrease in assets:
Accounts receivable	(1,382)	304	(625)
Inventories	(108)	186	213
Prepaid expenses and other assets	(92)	(399)	(50)
Net increase (decrease) in liabilities:
Customer deposits	(16)	(66)	115
Accounts payable	126	672	(71)
Accrued expenses	(480)	529	102
Deferred rent	9	12
Net cash provided by operating activities	1,897	5,082	1,747
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in equipment and leasehold improvements	(3,894)	(2,029)	(514)
(Investment in) proceeds from restricted cash	(3,360)		250
Net cash used in investing activities	(7,254)	(2,029)	(264)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock and exercise of stock options	23	69	187
Proceeds from long-term debt, net of costs	5,531	95
Principal payments on long-term debt	(635)	(218)	(275)
Payments for debt issuance costs	(259)
Net repayments on line of credit			(150)
Net cash provided by (used in) financing activities	4,660	(54)	(238)
Net increase (decrease) in cash and cash equivalents	(697)	2,999	1,245
Cash and cash equivalents at beginning of year	5,061	2,062	817
Cash and cash equivalents at end of year	4,364	5,061	2,062
Cash paid during the year for:
Interest	117	59	48
Income taxes	73	115	15
NON-CASH FINANCING AND INVESTING ACTIVITIES:
Additions to equipment	$ 1,699	$ 95