Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 23,870	$ 12,159
Accounts receivable, net of allowances for doubtful accounts and other adjustments of $244 (2019) and $135 (2018)	11,087	7,130
Prepaid expenses and other current assets	763	795
Total current assets	35,720	20,084
Equipment and improvements, net	1,392	865
Right-of-use assets	6,459
Deferred tax assets, net	191	191
Other assets	239	140
Intangible assets, net	4,761	238
Goodwill	7,797	3,685
Total assets	56,559	25,203
Current liabilities:
Accounts payable	1,536	1,160
Accrued payroll and benefits	2,128	1,745
Current operating lease liabilities	1,154
Other accrued liabilities	212	450
Deferred revenue	105	28
Total current liabilities	5,135	3,383
Non-current liabilities:
Operating lease liabilities	5,809
Deferred rent	677	723
Other long term liabilities	151	534
Total non-current liabilities	6,637	1,257
Commitments and contingencies
Stockholders' equity:
Preferred stock, par value $0.001 per share; 5,000,000 shares authorized; 5,500 shares issued (2019 and 2018); 0 and 1,345 shares outstanding (2019 and 2018, respectively)
Common stock, par value $0.001 per share; 100,000,000 shares authorized; 38,487,090 and 28,241,129 shares issued and outstanding (2019 and 2018, respectively)	38	28
Additional paid-in capital	273,815	256,626
Accumulated comprehensive deficit	(229,066)	(236,091)
Total stockholders’ equity	44,787	20,563
Total liabilities and stockholders' equity	$ 56,559	$ 25,203