Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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-Name Accounting Standards Codification
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Unit Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash settled restricted unit-based compensation awards			$ 138,896		$ 138,896		$ 91,065
Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common units, granted					76,084
Common units aggregate value, granted					$ 300
Restricted Unit-based Compensation Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common units aggregate value, granted	$ 2,300	$ 2,100
Common units, granted	599,479	102,834
Share-based Compensation Arrangement by Share-based Payment Award, Description					Each award represents the specified number of the Partnership’s common units plus reinvested distributions from the grant date to the vesting date.
Vesting period from grant date					3 years
Common units, vested					76,637	48,488
Common units, value					$ 2,000	$ 1,500
Common units issued to grantees					25,286	12,612
Amount paid to grantees in cash					$ 200	$ 500
Restricted stock or unit expense			200	$ 200	1,600	$ 1,300
Cash settled restricted unit-based compensation awards			1,100		1,100		$ 400
Non-vested awards not yet recognized			$ 1,900		$ 1,900
Expected weighted average period of non-vested awards not yet recognized					1 year 3 months 18 days