Income Taxes (Tables)

6 Months Ended

Jun. 30, 2013

Income Taxes [Abstract]

Reconciliation of the change in the amount of gross unrecognized income tax benefits

A reconciliation of the change in the amount of gross unrecognized income tax benefits is as follows (in thousands):

	June 30, 2013		December 31, 2012
Balance at beginning of period	$	632	$	632
Increase of unrecognized tax benefits related to prior years		—		—
Balance at end of period	$	632	$	632