Note 2 - Revenue Recognition (Tables)

3 Months Ended

Jun. 30, 2018

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Months Ended June 30,
	2018		2017
Product Sales	$	39,427,051	$	28,350,734
Support Services		19,776,215		19,109,009
Leasing Revenue		1,272,579		65,194
Other		391,624		172,436
Total	$	60,867,469	$	47,697,373