Statements of Cash Flows (USD $)	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities
Net income	$ 156,380	$ 70,802
Adjustments to reconcile net loss to net cash provided by operating activities
Depreciation and amortization	142,258	133,578
Deferred income taxes		30,067
Changes in assets and liabilities
Accounts receivable	(142,869)	(218,316)
Inventories	7,173	(9,299)
Prepaid expenses and other	58,881	(22,553)
Accounts payable	161,068	121,522
Accrued expenses	(147,915)	(98,618)
Income taxes payable (receivable)	78,470	(8,767)
Customer deposits	(205)	246
Net cash provided by (used in) operating activities	313,240	(1,338)
Cash flows from investing activities
Purchases of property and equipment	(135,331)	(62,183)
Net cash flows used in investing activities	(135,331)	(62,183)
Cash flows from financing activities
Payments on long-term debt and capital leases	(68,689)	(55,696)
Borrowings on long-term obligations		18,919
Net cash flows used in financing activities	(68,689)	(36,777)
Net increase (decrease) in cash	109,220	(100,298)
Cash - beginning of period	674,459	480,546
Cash - end of period	783,679	380,248
Supplemental disclosure of cash flow information
Cash paid for interest	54,139	59,985
Cash paid for income taxes	0	17,500
Acquisition of fixed assets through capital lease		$ 81,683