Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Deferred tax assets:
Net operating losses-Foreign	$ 4,572	$ 3,170
Net operating losses-US	2,107	2,541
Accrued vacation and bonus	2,342	1,360
Inventory capitalization	4,048	2,815
Inventory reserves	565
Allowance for doubtful accounts	252	336
Stock compensation expense	8,036	5,134
Amortization of intangibles	6,609	3,560
Foreign deferred tax assets	909	1,389
Other	352	282
Total deferred tax assets before valuation allowance	29,792	20,587
Less: valuation allowance	(5,424)	(4,558)
Net deferred tax assets	24,368	16,029
Deferred tax liabilities:
Amortization of goodwill and intangibles	7,025	2,644
Depreciation	1,235	1,936
Foreign deferred tax liabilities	314
Total deferred tax liabilities	8,574	4,580
Net deferred taxes	$ 15,794	$ 11,449