Composition Of Certain Financial Statement Captions (Tables)

6 Months Ended

Mar. 31, 2017

Composition Of Certain Financial Statement Captions [Abstract]

Schedule Of Accounts Receivable

Accounts Receivable

	March 31, 2017			September 30, 2016
Trade accounts receivable	$	78,755		$	66,229
Accounts receivable from patent administration program customers	12,719			11,829
Accounts receivable, gross	91,474			78,058
Less: allowance for doubtful accounts	(3,258		)	(2,370		)
Total	$	88,216		$	75,688

Schedule Of Inventories

Inventories

	March 31, 2017		September 30, 2016
Raw materials	$	3,934	$	3,526
Work in process	3,236		4,020
Finished goods	10,527		8,808
Total	$	17,697	$	16,354

Schedule Of Prepaid Expenses And Other Current Assets

Prepaid Expenses And Other Current Assets

	March 31, 2017		September 30, 2016
Prepaid expenses	$	17,532	$	13,440
Other current assets	10,510		11,578
Income tax receivable	4,459		1,284
Total	$	32,501	$	26,302

Schedule Of Accrued Liabilities

Accrued Liabilities

	March 31, 2017		September 30, 2016
Accrued royalties	$	2,144	$	1,939
Amounts payable to patent administration program partners	49,953		34,472
Accrued compensation and benefits	59,458		71,261
Accrued professional fees	7,896		6,528
Other accrued liabilities	59,578		54,855
Total	$	179,029	$	169,055

Schedule Of Other Non-Current Liabilities

Other Non-Current Liabilities

	March 31, 2017		September 30, 2016
Supplemental retirement plan obligations	$	2,694	$	2,540
Non-current tax liabilities	80,925		68,254
Other liabilities	12,313		12,128
Total	$	95,932	$	82,922