Significant Accounting Policies (Details) (USD $)	12 Months Ended								3 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Direct Marketing	Dec. 31, 2011 Direct Marketing	Dec. 31, 2010 Direct Marketing	Dec. 31, 2012 Building and improvements Minimum	Dec. 31, 2012 Building and improvements Maximum	Jun. 30, 2012 Software	Dec. 31, 2012 Software Minimum	Dec. 31, 2012 Software Maximum	Dec. 31, 2012 Equipment and furniture Minimum	Dec. 31, 2012 Equipment and furniture Maximum	Dec. 31, 2012 Equipment and furniture capital lease assets	Dec. 31, 2011 Equipment and furniture capital lease assets	Dec. 31, 2010 Equipment and furniture capital lease assets	Dec. 31, 2011 Land adjacent to Shoppers' Brea, California facility	Dec. 31, 2012 Property, plant and equipment, except assets under capital leases	Dec. 31, 2011 Property, plant and equipment, except assets under capital leases	Dec. 31, 2010 Property, plant and equipment, except assets under capital leases
Changes in the allowance for doubtful accounts
Balance at beginning of year	$ 3,230,000	$ 3,096,000	$ 2,784,000
Additions charged to expense	1,099,000	1,396,000	1,602,000
Amounts recovered against the allowance, net of charges	(927,000)	(1,262,000)	(1,290,000)
Balance at end of year	3,402,000	3,230,000	3,096,000
Property, plant and equipment
Estimated useful lives							10 years	40 years		3 years	10 years	3 years	20 years
Impairment charges									600,000
Proceeds from sale of vacant piece of land																	3,400,000
Gain recognized on sale of asset																	2,300,000
Equipment and furniture	293,138,000	291,838,000												2,774,000	2,749,000
Less accumulated amortization	(231,167,000)	(222,946,000)												(1,604,000)	(1,606,000)
Net property, plant and equipment	61,971,000	68,892,000												1,170,000	1,143,000
Depreciation and amortization expense	20,176,000	19,622,000	21,443,000	15,659,000	15,195,000	16,792,000								500,000	400,000	600,000		19,600,000	19,200,000	20,800,000
Goodwill and Other Intangibles
Impairment charges related to goodwill	156,936,000	0	0	0	0
Impairment charges related to trade names and client relationships	8,400,000
Reserve for Healthcare, Workers' Compensation, Automobile and General Liability
Deductible for automobile and general liability claims	300,000
Reserve for healthcare, workers' compensation, automobile and general liability	11,400,000	12,100,000
Deductible for individual healthcare claims	300,000
Deductible for workers' compensation	$ 500,000