Acquisition - Summary of Preliminary Allocation of Purchase Price to Assets Acquired and Liabilities Assumed (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014
Assets
Cash and cash equivalents	$ 12,227
Accounts receivable	23,870
Inventory	13,864
Prepaid and other current assets	8,060
Plant, equipment and timberlands	60,951
Intangible assets	87,596
Goodwill	74,870
Total assets	281,438
Liabilities
Accounts payable	20,253
Deferred tax liabilities	36,120
Other long term liabilities	1,927
Total liabilities	58,300
Total	223,138
Total	223,138
less cash acquired	(12,227)
Total purchase price	210,911
As Originally Presented [Member]
Assets
Cash and cash equivalents	12,227
Accounts receivable	23,870
Inventory	13,864
Prepaid and other current assets	6,674
Plant, equipment and timberlands	60,951
Intangible assets	87,596
Goodwill	76,256
Total assets	281,438
Liabilities
Accounts payable	20,360
Deferred tax liabilities	36,120
Other long term liabilities	1,820
Total liabilities	58,300
Total	223,138
Total	223,138
less cash acquired	(12,227)
Total purchase price	210,911
Cumulative Adjustments [Member]
Assets
Prepaid and other current assets	1,386
Goodwill	(1,386)
Liabilities
Accounts payable	(107)
Other long term liabilities	$ 107