MAJOR CUSTOMER - Customers (Details)	Mar. 31, 2018	Mar. 31, 2017
Notes to Financial Statements
Bethel-Webcor		1230.00%
Jacobs/HDR a joint venture		1870.00%
Cintas	1600.00%	1130.00%
Macerich		1120.00%
Firenze		2530.00%
Daust	4500.00%