Intangible Assets, Amortization Expense (Details) - USD ($)	3 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Amortization expense for acquired intangible assets [Abstract]
Amortization expense	$ 145,000	$ 174,000
Estimated future amortization expense for intangible assets subject to amortization [Abstract]
2017 - remaining nine months	435,000
2018	580,000
2019	580,000
2020	580,000
2021	580,000
Thereafter	1,673,000
Total	$ 4,428,000