CONDENSED BALANCE SHEETS - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 15,529,235	$ 9,454,150
Investments	7,890,617	7,913,793
Accounts receivable, net of allowance for doubtful accounts of $43,847 as of September 30, 2015 and $28,119 as of December 31, 2014	3,428,216	1,960,214
Inventory, net	2,259,290	2,125,838
Prepaid expenses and other current assets	361,304	276,540
Prepaid income taxes	215,721	320,941
Deferred income taxes	174,403	116,339
Total current assets	29,858,786	22,167,815
Property and equipment, net	851,671	794,835
Intangible assets, net	181,336	250,836
Deferred income taxes	121,184	76,557
Other assets	37,683	19,676
Total assets	31,050,660	23,309,719
Current liabilities:
Accounts payable	916,882	629,167
Accrued payroll and benefits	1,134,964	1,244,898
Other accrued taxes	23,295	65,790
Warranty reserve	63,080	27,925
Deferred revenue	532,945	308,341
Total current liabilities	2,671,166	2,276,121
Deferred revenue	265,740	142,902
Total liabilities	2,936,906	2,419,023
Stockholders' equity:
Common stock; $0.0001 par value; 90,000,000 shares authorized; 11,069,400 shares issued and outstanding as of September 30, 2015 and 10,814,650 shares issued and outstanding as of December 31, 2014	1,107	1,082
Additional paid-in capital	17,898,000	15,785,838
Retained earnings	10,250,463	5,125,249
Accumulated other comprehensive loss	(35,816)	(21,473)
Total stockholders' equity	28,113,754	20,890,696
Total liabilities and stockholders' equity	$ 31,050,660	$ 23,309,719

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.