ACCOUNTING STANDARDS UPDATES-summarize the impact of the adoption of ASC 606 (Details) - USD ($)	3 Months Ended						9 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Apr. 01, 2018	Mar. 31, 2018
ASSETS
Contract assets	$ 7,968,711						$ 7,968,711		$ 2,056,414	$ 347,896
Inventories	1,980,838						1,980,838		976,693	2,088,485
Deferred tax assets	2,311,440						2,311,440			2,046,298
LIABILITIES
Contract liabilities	4,693,889						4,693,889		$ 890,802	180,706
Accrued expenses	878,112						878,112			788,084
SHAREHOLDERS' EQUITY
Retained earnings	455,785						455,785			$ (576,617)
Net sales	4,270,396			$ 3,642,294			11,990,404	$ 14,061,574
Cost of sales	3,299,166						8,871,550
Selling, general and administrative	631,783			596,271			2,113,285	2,236,371
Income (loss) before income taxes	252,723						740,226
Income tax provision (benefit)	34,701			$ 413,096			177,104	$ 946,247
Net income (loss)	$ 218,022						$ 563,122
Net income (loss) per share – basic	$ 0.01			$ (0.02)			$ 0.02	$ 0.00
Net income (loss) per share – diluted	$ 0.01			$ (0.02)			$ 0.02	$ 0.00
Statement of Cash Flows [Abstract]
Net income	$ 218,022	$ 180,715	$ 164,385	$ (691,391)	$ 368,186	$ 424,502	$ 563,122	$ 101,297
Adjustments to reconcile net income to net cash used in operating activities:
Change in contract loss provision							24,541	(43,815)
Deferred income taxes							177,104	904,243
Changes in operating assets and liabilities:
Inventories							(1,004,145)	(385,013)
Contract assets							(5,912,297)	(65,500)
Accrued expenses							202,860	(28,712)
Contract liabilities							3,803,087	$ (66,121)
Restatement Adjustment [Member]
ASSETS
Contract assets	(7,968,711)						(7,968,711)
Inventories	1,855,219						1,855,219
Deferred tax assets	621,462						621,462
LIABILITIES
Contract liabilities	(3,787,769)						(3,787,769)
Accrued expenses	(56,266)						(56,266)
SHAREHOLDERS' EQUITY
Retained earnings	(1,628,348)						(1,628,348)
Net sales	(2,411,222)						(6,260,193)
Cost of sales	(1,839,628)						(4,015,449)
Selling, general and administrative	(893)						(2,320)
Income (loss) before income taxes	(570,701)						(2,242,425)
Income tax provision (benefit)	(159,325)						(614,077)
Net income (loss)	$ (411,376)						$ (1,628,348)
Net income (loss) per share – basic	$ (0.02)						$ (0.04)
Net income (loss) per share – diluted	$ (0.02)						$ (0.04)
Statement of Cash Flows [Abstract]
Net income							$ (1,628,348)
Adjustments to reconcile net income to net cash used in operating activities:
Change in contract loss provision							35,915
Deferred income taxes							(614,077)
Changes in operating assets and liabilities:
Inventories							(1,855,219)
Contract assets							7,968,711
Accrued expenses							(111,828)
Contract liabilities							(3,787,769)
Previously Reported [Member]
ASSETS
Contract assets	$ 0						0
Inventories	3,836,057						3,836,057
Deferred tax assets	2,932,902						2,932,902
LIABILITIES
Contract liabilities	906,120						906,120
Accrued expenses	821,846						821,846
SHAREHOLDERS' EQUITY
Retained earnings	(1,172,563)						(1,172,563)
Net sales	1,859,174						5,730,211
Cost of sales	1,459,538						4,856,101
Selling, general and administrative	630,890						2,110,965
Income (loss) before income taxes	(317,978)						(1,502,199)
Income tax provision (benefit)	(124,624)						(436,973)
Net income (loss)	$ (193,354)						$ (1,065,226)
Net income (loss) per share – basic	$ (0.01)						$ (0.02)
Net income (loss) per share – diluted	$ (0.01)						$ (0.02)
Statement of Cash Flows [Abstract]
Net income							$ (1,065,226)
Adjustments to reconcile net income to net cash used in operating activities:
Change in contract loss provision							60,456
Deferred income taxes							(436,973)
Changes in operating assets and liabilities:
Inventories							(2,859,364)
Contract assets							2,056,414
Accrued expenses							91,033
Contract liabilities							$ 15,318