7. Supplementary Balance Sheet Information

The following table summarizes our accounts receivable, net of the related allowance for doubtful accounts, as of December 31, 2013 and June 30, 2013. Refer to Note 2(c) for a summary of our installments receivable balances.

	Gross		Allowance		Net
	(Dollars in Thousands)
December 31, 2013:
Accounts Receivable	$	32,407	$	2,364	$	30,043
	$	32,407	$	2,364	$	30,043

June 30, 2013:
Accounts Receivable	$	38,603	$	1,615	$	36,988
	$	38,603	$	1,615	$	36,988

As of December 31, 2013, one customer’s receivable balance represented approximately 13% of our total receivables.

Accrued expenses and other current liabilities in the accompanying unaudited consolidated balance sheets consist of the following:

	December 31, 2013		June 30, 2013
	(Dollars in Thousands)

Royalties and outside commissions	$	4,369	$	4,312
Payroll and payroll-related	15,201		18,702
Other	9,472		11,407
Total accrued expenses and other current liabilities	$	29,042	$	34,421

Other non-current liabilities in the accompanying unaudited consolidated balance sheets consist of the following:

	December 31, 2013		June 30, 2013
	(Dollars in Thousands)

Deferred rent	$	578	$	862
Other*	10,993		11,515
Total other non-current liabilities	$	11,571	$	12,377

* Other is comprised primarily of our reserve for uncertain tax liabilities of $10.0 million and $10.4 million as of December 31, 2013 and June 30, 2013, respectively.