Quarterly Data

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Quarterly Data (Unaudited) [Text Block]

20. Quarterly Data (Unaudited)

					Continuing Operations						Net Earnings
Quarter	Revenue		Gross Profit		Earnings		Per Share - Basic		Per Share - Diluted		Net Earnings		Per Share - Basic		Per Share - Diluted
2013
First	$	2,039,573	$	776,622	$	196,989	$	1.14	$	1.12	$	210,003	$	1.21	$	1.20
Second	2,228,763		855,952		294,352		1.72		1.70		330,049		1.93		1.91
Third	2,252,349		876,650		263,652		1.55		1.53		269,114		1.58		1.56
Fourth	2,209,128		830,557		210,812		1.24		1.22		193,963		1.14		1.13
	$	8,729,813	$	3,339,781	$	965,805	5.64		5.57		$	1,003,129	5.86		5.78
2012
First	$	1,954,614	$	746,080	$	186,409	$	1.01	$	1.00	$	196,063	$	1.07	$	1.05
Second	2,038,289		777,102		205,156		1.12		1.10		214,101		1.17		1.15
Third	2,097,605		810,139		233,330		1.28		1.27		241,046		1.33		1.31
Fourth	2,013,831		773,744		208,224		1.17		1.16		159,860		0.90		0.89
	$	8,104,339	$	3,107,065	$	833,119	4.59		4.53		$	811,070	4.47		4.41