Accrued Expenses and Other Current Liabilities (Tables)

3 Months Ended

Mar. 31, 2013

Accrued Expenses

	December31,	March31,
	2012	2013
		(Unaudited)
Accrued stockholder interest	$10,769	$21,017
Accrued compensation	320,251	284,363
Accrued warranty	115,566	107,589
Accrued inventory purchases	81,146	63,363
Customer deposits	5,841	7,413
Deferred rent	65,380	67,168
Accrued taxes and other	124,118	118,013
	$723,071	$668,926