Acquisition-related charges (Tables)

3 Months Ended

Mar. 31, 2013

Business Combinations [Abstract]

Total acquisition-related costs associated with the National acquisition

These total acquisition-related charges are as follows:

	For Three Months Ended March 31,
	2013		2012
Acquisition charges:
Amortization of intangible assets	$	81	$	81
Retention bonuses	2		41
Severance and other benefits	—		12
Stock-based compensation	3		6
Transaction and other costs	—		13
As recorded in Acquisition charges	86		153
Distributor contract termination recorded in COR	—		21
Total acquisition-related costs	$	86	$	174