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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Operating Activities:    
Net loss $ (7,967) $ (3,799)
Adjustments to reconcile net loss to net cash used in operating activities    
Depreciation and amortization 2,027 $ 817
Amortization of debt discount 862
Stock-based compensation 254 $ 60
Change in warrant liability (1,081) (1,127)
Allowance for doubtful accounts (490) $ 417
Loss on lease termination 371
Shares issued for services 154 $ 268
Deferred tax provision 358
Loss on write-off of leasehold improvements 266
Changes to operating assets and liabilities (net as of assets acquired and liabilities assumed in mergers):    
Accounts receivable and unbilled revenues 4,371 $ (764)
Inventories 745 967
Prepaid expenses and other current assets 23 (413)
Other assets 45 (74)
Accounts payable (802) (248)
Deferred revenue (1,281) (245)
Accrued expenses $ 501 (100)
Dividend payable 112
Other non-current liabilities $ (338) 409
Net cash used in operating activities (1,982) (3,719)
Investing activities    
Purchases of property and equipment (639) $ (266)
Acquisition of Conexus, net $ 59
Acquisition of Wireless Ronin, Inc. and Broadcast International, net $ (1,710)
Net cash used in investing activities $ (580) (1,976)
Financing activities    
Issuance of convertible preferred stock and warrants 265 $ 4,565
Issuance of short-term notes 200
Payments of short-term notes (50)
Issuance of loans payable and warrants 4,044 $ 1,911
Payments of loan payable (1,000) $ (316)
Payment of debt issuance costs (109)
Net cash provided by financing activities 3,350 $ 6,160
Increase in Cash and Cash Equivalents 788 465
Cash and Cash Equivalents, beginning of year 573 108
Cash and Cash Equivalents, end of year $ 1,361 $ 573