Supplemental Cash Flow Information: (Tables)

3 Months Ended

Mar. 31, 2013

Supplemental Cash Flow Information:

Schedule of information about other cash flow activities

	Three months ended March 31,
(in thousands)	2012		2013
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for:
Interest	$	36	$	21
Income tax payments	$	14	$	32
NON-CASH TRANSACTIONS:
Deferred purchase price in connection with Anomalous acquisition	$	950	$	—
Deferred purchase price in connection with ttMobiles acquisition	$	2,315	$	—
Unpaid deferred secondary offering costs	$	640	$	—
Cashless exercise of warrants	$	479	$	—