Acquisitions (Details) (USD $)	12 Months Ended			1 Months Ended	12 Months Ended		1 Months Ended		3 Months Ended			12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Nov. 30, 2011 BTS	Mar. 31, 2014 BTS	Dec. 31, 2013 BTS	Jan. 31, 2012 MET	Jan. 31, 2011 MET	Sep. 30, 2013 MET	Mar. 31, 2013 MET	Sep. 30, 2012 MET	Mar. 31, 2014 MET	Dec. 31, 2012 MET	Dec. 31, 2011 MET
Acquisitions
Contingent consideration, holdback provision						$ 250,000
Contingent consideration, deferred payment arrangement					335,000
Amount paid on modification of certain earn-out provisions					700,000
Contingent consideration scheduled payment term for other adjustments								2 years
Contingent consideration, maximum annual amount other adjustments								1,000,000
Contingent consideration scheduled payment term for an earn-out provision								24 months
Contingent consideration, maximum annual earn-out provision								2,000,000
Cash payment related to first deferred payment							668,000		409,000
Amount heldback in accordance with certain provisions of purchase agreement							250,000				(250,000)
Amount of the earn-out provision												0
Cash payment related to second deferred payment	659,000	700,000	788,000							1,000,000			0	0
Fair value of consideration transferred:
Cash paid on or shortly after acquisition date				840,000
Estimated fair value of contingent consideration				971,000
Total				1,811,000
Allocation:
Cash Acquired from Acquisition								369,000
Accounts receivable				(164,000)
Other tangible assets				(375,000)
Purchased intangible assets				(1,100,000)				(1,620,000)
Liabilities				624,000
Goodwill, net	$ 17,318,000	$ 17,318,000	$ 17,318,000	$ 796,000