Note 3 - Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2014

Accounting Policies [Abstract]

Schedule of Inventory, Current [Table Text Block]

	June 30,		December 31,
	2014		2013
Finished goods	$	53,211	$	54,403
Raw materials		6,044		6,084
	$	59,255	$	60,487

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2014		2013		2014		2013
Net income	$	8,283	$	12,292	$	15,644	$	25,032
Weighted average shares outstanding used in calculating basic earnings per share		14,454		14,635		14,567		14,641
Dilutive common share equivalents		84		173		86		142
Weighted average common and common share equivalents used in calculating diluted earnings per share		14,538		14,808		14,653		14,783
Income per common share:
Basic	$	0.57	$	0.84	$	1.07	$	1.71
Diluted	$	0.57	$	0.83	$	1.07	$	1.69
Options and restricted share units outstanding which are not included in the calculation of diluted earnings per share because their impact is anti-dilutive		182		2		158		4

Schedule of Credit Losses for Financing Receivables, Current [Table Text Block]

Balance at beginning of period	$	3,999
Provision		1,737
Write-offs		(1,952	)
Balance at end of period	$	3,784

Past Due Financing Receivables [Table Text Block]

Current	$	3,736
1-30		533
31-60		575
61-90		203
91+		192
	$	5,239