Subsequent Event (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Subsequent Event [Line Items]
Cash and cash equivalents	$ 13,516	$ 22,422	$ 22,320	$ 27,591
Accounts receivable, net	43,118	43,513
Other receivables	10,924	11,012
Inventories, net	17,316	21,683
Deferred income taxes	670	535
Other current assets	6,004	5,454
Total current assets	91,742	105,412
Property and equipment, net	4,605	4,890
Other assets	653	801
Total assets	100,052	114,572
Short-term debt	0	5,402
Accounts payable	23,242	24,327
Accrued liabilities	14,732	14,545
Deferred revenue	13,394	13,527
Other current liabilities	408	297
Total current liabilities	52,009	58,331
Other long-term liabilities	4,623	5,271
Tecnonet [Member]
Subsequent Event [Line Items]
Cash and cash equivalents	2,861	6,280
Accounts receivable, net	23,920	25,981
Other receivables	10,261	10,458
Inventories, net	7,880	9,873
Deferred income taxes	11	57
Other current assets	4,244	3,824
Total current assets	49,177	56,473
Property and equipment, net	327	358
Other assets	84	90
Total assets	49,588	56,921
Short-term debt	0	5,402
Accounts payable	15,651	17,173
Accrued liabilities	4,143	4,048
Deferred revenue	4,906	4,816
Other current liabilities	444	0
Total current liabilities	25,144	31,439
Other long-term liabilities	860	967
Total liabilities	$ 26,004	$ 32,406