Accounts Receivable (Tables)

3 Months Ended

Mar. 31, 2013

Account Receivable

Accounts receivable at December 31, 2012 and March 31, 2013 were comprised of the following (dollars in thousands):

	December 31,			March 31,
	2012			2013
Trade receivables	$	14,965		$	17,428
Unpaid amounts for benefit services		8,362			15,700
		23,327			33,128
Less allowance for doubtful accounts		(403	)		(420	)
Accounts receivable, net	$	22,924		$	32,708