Intangible Assets, Amortization Expense (Details) - USD ($)	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Amortization expense for acquired intangible assets [Abstract]
Amortization expense	$ 174,000	$ 180,000
Estimated future amortization expense for intangible assets subject to amortization [Abstract]
2016 - remaining nine months	522,000
2017	665,000
2018	665,000
2019	665,000
2020	665,000
Thereafter	2,543,000
Total	$ 5,725,000