Condensed Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 86,159	$ 112,801
Accounts receivable, net of allowances of $4,225 and $1,116 at June 30, 2016 and December 31, 2015, respectively	2,403	4,249
Inventories, net	18,906	20,602
Prepaid expenses and other current assets	1,958	1,473
Total current assets	109,426	139,125
Property and equipment, net	1,995	1,404
Goodwill	3,273
Other intangible assets, net	3,796	53
Other assets	219	223
Total assets	118,709	140,805
Current liabilities:
Accounts payable	3,412	4,069
Accrued and other current liabilities	7,416	6,959
Customer deposits	6,958	9,488
Total current liabilities	17,786	20,516
Warranty reserve and other long-term liabilities	2,031	1,418
Total liabilities	19,817	21,934
Commitments and contingencies (Note 10)
Stockholders' equity:
Common stock, $0.01 par value — Authorized 200,000,000 shares; issued 18,151,148 and 18,066,143 and outstanding 18,078,421 and 17,993,416 shares at June 30, 2016 and December 31, 2015 respectively	181	180
Additional paid-in capital	296,377	294,227
Treasury stock, at cost (72,727 shares at June 30, 2016 and December 31, 2015)	(260)	(260)
Accumulated deficit	(197,406)	(175,276)
Total stockholders' equity	98,892	118,871
Total liabilities and stockholders' equity	$ 118,709	$ 140,805